TRANSIENT DISCRIMINATING FILTER
INSTALLATION INSTRUCTIONS
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1. PREPARATION
DANGER
: Electrical shock or burn hazard.
Installation of this Transient Voltage Surge
Suppressor should only be made by qualified
personnel. Failure to lockout electrical power during
installation or maintenance can result in fatal
electrocution or severe burns. Before making any
connections to this electrical panel be sure that power
has been removed from all associated wiring, electrical
panels, and other electrical equipment.
CAUTION NOTES
:
1. The installation of this Surge Protector should
follow all applicable electrical codes, such as the
National Electrical Code, or the Canadian Electrical
Code.
2. Check to make sure line voltage does not exceed
Surge Protector voltage requirement.
3. Prior to installation ensure that the TDF is of the
correct voltage, current, and frequency rating for
your application.
4. The earth terminal must be connected to a low
impedance earth (< 10 ohms) for correct operation.
5. Do not perform a “Flash Test” or use a Mega-Ohm
Meter (Megger) to test circuits that are protected
with TDF modules. Damage may occur to the TDF
modules.
6. Follow all instructions to ensure correct and safe
operation.
7. Do not attempt to open or tamper with the TDF units
in any way as this may compromise performance
and will void warranty.
2. INTRODUCTION
Transient Discriminating Filters (TDF) are packaged in “DIN 43
880” profile enclosures for simple installation onto 35mm DIN
rails. They can be selected for use on distribution systems with
nominal RMS voltages of 120Vac or 240Vac at frequencies of
50/60Hz. The 120Vac unit also operates on nominal 125Vdc
supplies.
3. QUICK INSTALLATION OVERVIEW
Install in the following manner:
1. Ensure that power is removed from the area and the
circuits that will be connected.
2. Snap lock the TDF module to the DIN rail.
3. Install the appropriate upstream overcurrent protection.
4. Connect wiring to the indicated i/p and o/p terminals.
5. Apply power and observe correct operation of the Status
Indication, and alarm facilities if provided - see Section
11.
4. PROTECTION CONCEPTS
To optimize effectiveness of the TDF protection, the
unprotected and protected wiring should be separated. Wiring
from the exposed transient source to the TDF should be
considered unprotected and kept approximately 12" (300mm)
from all other wiring wherever possible. Wiring on the
equipment side of the TDF should be considered protected.
The separation of protected and unprotected wiring is
recommended to minimize the risk that transients conducted
on unprotected wiring may cross couple onto protected
circuits, and diminish the level of protection available from the
TDF module.
The terminals on the TDF module are labeled “INPUT/LINE”
(unprotected side) and “OUTPUT/LOAD” (protected side)
assuming that the source of the transients is on the input side
of the TDF module.
For applications where the transient source is on the load side
of the TDF module, the TDF should be reverse connected
with the INPUT/LINE terminals connected to the load side,
toward the source of the transients.
MODEL NUMBER
TDF-3A-120V
TDF-10A-120V
TDF-20A-120V
TDF-3A-240V
TDF-10A-240V
TDF-20A-240V
Vendor Manual Surge Filter Alarm Relay Critec TDF-10A-240V
Q-Pulse Id: VM90
08/02/2013
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